Apparatus for warping



Nov. 22, 1955 J. M. DICKSON APPARATUS FOR WARPING Filed Sept. 25, 1952 INVENTOR JOHN M. DICKSON ATTORNEYS.

United States Patent APPARATUS, FOR WARPING John M.,Dicltson, Rock Hill, S. C., assignor to Celanese Corporation of America, New York, N. Y., a corporation of Delaware Application September 23, 1952, Serial No. 310,994

Claims. (Cl. 28-32) This invention relates to. improvements in beam warping, and relates more. particularly to the winding of selvages-ongwarp beams.

In the manufacture of woven or other textile fabrics it is customary to prepare. a warp of parallel yarns by drawing the, yarns from a plurality of packages and winding these yarns in substantially parallel relationship on a driven rotating warp beam mounted in a warper. During this operation it'is essential thatthe windings on the warp beam remain level since, if, any high. spots develop in the course of winding alarger amount of yarn will be drawn from certain of the yarn packages as compared with others for each revolution of the warp beam, with the result that the winding will be non-uniform, which affects subsequent operations and ultimately produces defective woven, fabrics. Toassist. in maintaining, a level winding on the warp beam, it is the practice to provide a presser roll which bears against the windings and serves to flatten out any high spots therein, and insures uniform density throughout the winding operation.

In the manufacture of woven or other fabrics it is common to employ heavier and stronger warp yarns to make up the outer edges of selvages of the fabric, so that such edges will have the desired additional strength and firmness. Frequently, it is found during the preparation of the warp that such selvage yarns have a tendency to move or crawl towards the center of the warp beam and to cross under or over the yarns making up the main portion, or body, of the warp. This is particularly noticeable when the selvage yarns are of high twist, larger than the body or warp ends or of opposite twist from the body or warp ends. Such a condition is obviously undesirable and results in defective warps from which first quality fabrics cannot be produced.

It is an important object of this invention to provide a method and an apparatus for beam warping which are free from these and other disadvantages.

It is a further object of this invention to provide a new and improved method and apparatus for beam warping in which all the yarns may be wound onto the beam in parallel relation minimizing any danger of movement of the selvage yarns towards the center of the beam.

Other objects of this invention will be apparent from the following detailed description and claims.

A preferred embodiment of this invention is illustrated in the accompanying drawing in which,

Fig. l is a perspective view of the beam warper of this invention, with parts omitted and other parts in section in the interest of clarity, and

Fig. 2 is a side elevation of the beam warper, with parts omitted and other parts in section.

Referring now to the drawing, reference numeral 11 designates generally a plurality of yarns which have been unwound from individual yarn packages and passed hrough conventional tension devices (not shown), and which have just emerged from a reed (not shown), which is a conventional comb-like struc.ure ..erving to maintain the individual yarns in separated condition.

2,724,170 Patented Nov. 22, 1955 ice These yarns 11 include body yarns 12 and selvage yarns 13. The spacing between individual selvage yarns 13 may be equal to, or more or less than, the spacing between individual body yarns 12. The yarns 11 pass.

over the guiding and measuring, roll 14, and to wind. the

yarns on the warp beam barrel, 16 in substantially parallel: relationship. To assist in maintaining level winding on the Warp beam there is provided a presser roll 18,, which is rotatably mounted, in a conventional, manner at one.

end of, a Support 19, which is, in turn, pivotally mounted.

at its other end 21. This presser roll 18 bears against the: wound warp, i. e. the yarn wound on the warp beam barrel 16, by the force of its own weight, assisted, if desired, by any suitable external force.

According to my invention the beam warper is. provided at each side with a selvage guide pin 22 which is mounted at one end of a bracket 23. In order to support, bracket 23 adjustably on the frame 24 of the beam warper, the frame 24 is provided with a threaded stud 25 which fits through a hole at the other end of the bracket 23. On this stud 25 a nut 26 serves to clamp the bracket 23 to. the frame 24 in any adjusted position. The selvage guide. pin 22 extends across only part, of the length of the warp beam and is positioned at a point displaced from the plane of travel of the body yarns 12 from the guiding and measuring roll 14 to the warp beam 15, the displacement of the selvage guide pin from said plane being on the warp beam side of the plane, that is, in a direction away from the presser roll 18 Accordingly, the selvage guide pin 22 directs the selvage yarns 13 onto the warp beam barrel 16, or the layers of yarns previously Wound on the barrel, at an angle different from that at which the body yarns are directed. The selvage yarns thus come into contact with the rotating warp beam barrel 16, or the yarns wound thereon, at a point in its rotation ahead of the point where the body yarns make contact with the beam, or the yarns thereon, which latter point, in the construction shown on the drawing, is approximately the point where the presser roll contacts the yarns. This enables the selvage yarns to settle into position so that they will have less tendency to crawl towards the center of the barrel 16. Preferably the selvage yarns contact the warp beam barrel 15 or the yarns thereon, at a point at least three-fourths inch ahead of the body yarns and presser roll.

It is to be understood that the foregoing detailed description is given merely by way of illustration and that many variations may be made therein without departing from the spirit of my invention.

In the appended claims, the references to the warp beam are intended to denote the Warp beam together with any layers of yarns which may be wound around the warp beam. Thus, when a yarn comes in contact with the yarns already Wound around the warp beam, it is said, in the language of the claims, to come in contact with the warp beam.

Having described my invention, what I desire to secure by Letters Patent is:

1. In a beam warping apparatus wherein a warp of yarns including body yarns and selvage yarns is wound onto a rotating warp beam, guide means for directing said body yarns onto said rotating beam, and guide means for directing said selvage yarns onto said beam, the construction and arrangement of the guide means being such that the selvage yarns come into contact with the rotating warp beam at a point in its rotation ahead of the point where the body yarns come into contact with said rotating beam.

-2. In a beam warping apparatus wherein a warp of yarns including selvage yarns and body yarns is wound onto a rotating warp beam and a presser roll bears against said warp beam to aid in level winding and insure uniform density in the wound warp, guide means for directing said'bodyyarns onto said rotating beam and guide means for directing said selvage yarns onto said beam, the construction and'arrangement of the guide means being such that the selvage yarns come into contact with the rotating 'Warp beam at a point in its rotation ahead of the point where the body yarns come into contact with said rotating beam and ahead of the point where said presser roll comes into contact with the yarns;

' 3. In a beam warping apparatus wherein a warp of yarns including selvage yarns and body yarns is wound onto a rotating warp beam and a presser roll bears against said warp beam to aid in level winding and insure uniform density-in the wound warp, guide means'for directing said body yarns onto said rotating beam and guide means for directing said selvage yarns onto said beam, said selvage guide means comprising a pin extending across apart of the length of said warp beam at each end thereof and located at a point displaced from the plane of travel of said body yarns from said body yarn guide-means to said warp beam, said displacement of said selvage guide means from said plane being on the warp beam side of said plane.

4. In a beam warping apparatus wherein a warp of yarns including selvage yarns and body yarns is wound 4 over a guide roller onto a rotating Warp beam and a presser roll bears against said warp beam to aid in level winding and insure uniform density in the wound warp,

' selvage guide means comprising an adjustable pin supporting bracket and a selvage guide pin mounted thereon, said pin extending across only part of the length of said warp beam and being located at a point displaced from the plane of travel of said body yarns from said guide roller to said warp beam, said displacement of said selvage guide pin from said plane being on the warp beam side. 7 a

5. In a beam warping apparatus wherein a warp of yarns including selvage yarns and body yarns is wound over a guide roller onto a rotating warp beam and a presser roll bears against said warp beam to aid in level winding and insure uniform density in the wound warp, selvage guide means comprising an adjustable pin supporting'bracket and a selvage guide'pin mounted thereon,

said pin'extending across only part of the length of said warp beam and being located at a pointdisplaced from the plane of travel of said body yarns for the purpose of directing the selvage yarn onto the warp beam at an angle different from that at which said body yarns are directed. I

References Cited in the file of this patent UNITED STATES PATENTS 1,996,810 Iler Apr. 9, 1935' 2,572,904 Bauer Oct. 30, 1951' I FOREIGN PATENTS 171,313 Switzerland Nov. 1, 1934 

1. IN A BEAM WARPING APPARATUS WHEREIN A WARP OF YARNS INCLUDING BODY YARNS AND SELVAGE YARNS IS WOUND ONTO A ROTATING WARP BEAM, GUIDE MEANS FOR DIRECTING SAID BODY YARNS ONTO SAID ROTATING BEAM, AND GUIDE MEANS FOR DIRECTING SAID SELVAGE YARNS ONTO SAID BEAM, THE CONSTRUCTION AND ARRANGEMENT OF THE GUIDE MEANS BEING SUCH THAT THE SELVAGE YARNS COME INTO CONTACT WITH THE ROTATING WARP BEAM AT A POINT IN ITS ROTATION AHEAD OF THE POINT WHERE THE BODY YARNS COME INTO CONTACT WITH SAID ROTATING BEAM. 